Alfred laukhuff



A. LAUKHUFF DIE Filed June 12, 1922 June 23, 1925.

FIG 5 17 i 17 Z-j V2 '15 WITNESSES Alf AXE/i205 a 714 E .W I, TTOIQNEYPatented June 23, 1925.

UNITED STATES PATENT OFFICE.

ALFRED LAITKHUFF, OF SHOREWOOD, WISCONSIN, ASSIGNOR T0 ALBERT O.TROSTEL',

OF MILWAUKEE, WISCONSIN.

DIE.

Application filed June 12, 1922. Serial No. 567,765.

To all whom it may concern.

Be it known that I, ALFRED LAUKHUFF, a citizen of the United States,residing in the village of Shorewood. county of Milwaukee, and State of\Visconsin, have invented a certain new and useful Improvement in Dies.of which the following is a specification.

The object of the invention is to provide a sectional die moreparticularly for use in con'ipressing fibrous material to a finishedshape, such as a. sphere, cylinder or other solid of revolution.

lVith this and other objects in view the invention consists in the diehereinafter described and all equivalents.

In the drawings: Fig. 1 is a vertical sectional View through a deviceembodying the invention, shown at the time of charging the die; Fig. 2is a vertical sectional view-taken on the line 22 of Fig. 3 with theparts in forming position; Fig. 3 is a plan view of the die.

The die includes one part composed of sections 4: and 5 and another part6. It also includes a filling section 7 and means for clamping thesections 41-. 5 and 6 together.

Where, as in the embodiment shown, the die is used for forming a spherefrom a roughly formed and compacted body 8 of fibrous material, suchasfelted hair, the

base section 4; is provided with a hemispherical cavity 9. The uppersection is in the form of a cylindrical tube 10 and an annular tongueand groove connection 11 is provided between these sections 4 and 5.

WVith some materials it is preferable to provide a filling section 7,here shown as in the form of a tube having an outwardly flared end 12.An annular tongue and groove connection 13 is provided between thesections 5 and 7.

The part 6 forms the plunger, slidably movable in the section 5, and inthe case of a sphere is provided with a hen'iispherical cavity 14 in itsinner end. It also has an annular flange 15.

In the case of a sphere, with the parts shown in the position of Fig. 1,the mass of material to be compressed has been intro duced through thefilling opening 12 into-the die cavity. Then the section 7 is removedand the part 6 is moved down to compress the material into a finishedsphere 16, as shown in Fig. 2. This relative movement of the part 6 withreference to the parts 4 and 5 may be done with a suitable press, but inorder that the material in the die may be allowed to set or dry whilestill in the die, I provide a plurality of clamps 17 having hooked ends18 engageable with the top and bottom portions of the die. Spacedlugs'19 are provided on the basesection to receive between them thelower end of each clamp 17 and thus prevent its lateral movement. Whenthe clamps 17 have been applied the die may be removed from the pressand the material therein subjected to a drying heat, where such isdesired.

It will be noted that by making the base section 4 separate from thesection 5 it becomes an easy matter to remove the compressed articlefrom the die when the clamps 17 are released.

For a cylinder the head end of the section 4 may be flat and thematerial compressed between said flat end, the tubular section 5 and thepart 6 with a flat inner face, as will be readily understood by thoseskilled in this art, and I therefore desire it to be understood that theinvention is not to be limited to any specific form or arrangement ofparts except in so far as such limitations: are specitied in the claim.

What I claim as my invention is:

In a die, the combination of a base section provided with ahemispherical cavity, a tubular section having an interlockingconnection with the top of said base section, a plunger section having ahemisphericalcavity in its front end cooperating with the cavity in thebase section to form a spherical cavity. said plunger being slidablymounted in said tubular section and contacting with the inner wallthereof throughout its length and having an external flange abuttingagainst the top of said tubular section to limit its movement, and meansfor holding the plunger section and tubular section to the base sectioncomprising clamps engaging the plunger section and the base section.

ALFRED LAUKHUFF.

